Signal Consulting, LLC   Model Si14HyATMC1-50V-20A

Single, Hybrid, Adjustable Ramp-Time, Motor Controller with

LCD Port, Load-Voltage LED and with 20kHz PWM Y-Chip

Si14HyATMC1-50V-20A Features: Power Semiconductors: One 60A MOSFET Max. Continuous Current: 20A with Proper Heat Sink Max. Current for 5 sec : 40A with Proper Heat-sink Board's Size: 2.9"x 2.6"x1.9" (7.26cm x 6.60cm x4.82cm). Components Type: 100% Solid State, NO Relays   Adjustable Load Voltage: The average Load-Voltage is adjustable from 0V to 50V  in  0.416V steps ( or max. value of Vp) with a Pulse-Width Modulation (PWM) control signal or with an internal/external potentiometer.   Adjustable Ramp-Time: The motor-current build-up and decay times are adjustable from 500mS to 23.3S  with a control signal or with an internal/external potentiometer.   High Power-Efficiency: 97.5% typical, at 50V and 20A   LCD Output port for RPM and Ramp-Time Display On Board: Filter Capacitors VTS diodes Snubber Circuit Ready Optional 20A Fast Mini Fuse (with socket) Load-Voltage Indicator, LED (red) Voltage Requirement: A single DC Source Voltage (unregulated) with any voltage value from 9V to 50V (for Vp)    Si14HyATMC1-50V-20A  Spec Sheet  (PDF)

The Si14HyATMC1-50V-20A is a single, microprocessor based, Hybrid, Adjustable Ramp-Time, Unidirectional, Motor-Controller board that uses pulse-width modulation (PWM) to efficiently control the power flow (or motor speed) to a brush type DC motor, from 0 to 1000W, in 8.33W steps. The motor acceleration and deceleration is adjustable (using the Ramp-Time input) from 500ms to 23.3s in 100ms steps. An onboard microprocessor generates a 5kHz or 20kHz PWM carrier signal, controls the load power (or motor speed), monitors the user inputs and selects the motor acceleration delay. The PWM carrier frequency is user selectable by the jumper J1M, 20kHz when J1M is open and 5kHz when short. The high-frequency PWM rate provides a smooth motor-speed control, and insures a quiet motor environment. As the name hybrid (Hy) implies, the required motor speed (or PWM pulse-duration) and Ramp-Time are derived from a variable analog-voltages (V_{P1,G ,}V_P2,G ), while the other control-signals are digital. An onboard LED (red) is used to monitor the load voltage and an optional, fast-acting 20A Mini-Fuse (with socket) is used for motor/board protection. Snubbing circuits and filter capacitors are included to suppress inductive switching transients. A small Aluminum plate (3.3”x4.0”x0.065”) is required to operate at 10A current level (or at 500W power levels). Higher current levels (20A) or 1000W power-levels can be achieved with more efficient heat-sinks. This can be accomplished by bolting this plate to a larger metal surface. An optional 2 line by 20 characters long LCD (with HITACHI HD44780 Interface Standard) is used for Set-RPM, Measured-RPM and Ramp-Time data display. This board requires a single unregulated 9V to 30V DC power source at 0A to 20A to operate normally. At higher load voltages, two voltage sources can be used, (9 to 30V for the controller and 9 to 50V for the motor). Typical applications are: DC Motor-Speed Controller with variable acceleration/deceleration, Light-Dimmer with variable Ramp-Time, etc.

A Typical Si14HyATMC1-50V-20A Application

In this 30V open-loop speed-control application, the PWM pulse-duration (or motor-speed) is linearly adjusted by an external 1-turn 5kW pot P1; and efficiently controlling the motor (or load) power in the 0 to 1000W range in 8.33W steps. Similarly, the motor acceleration (or Ramp-Time in the 500 mS to 23.3S range) is linearly adjusted by the Pot P2. This dual potentiometer can be ordered from Signal with part number of Si5Pot2-2x5k. A 2 line by 20 characters long LCD (with HITACHI HD44780 Interface Standard) is used for Set-RPM and Measured-RPM data display. The LCD with back-light (with 8” cable, and with two 14-pin connectors) can be ordered from Signal with part number of Si24LCD2L20CH ; OEM pricing is available from Sunlike Display Tech Corp. in Taiwan, http://www.lcd-modules.com.tw. The DC Motor can be purchased from Bodine, www.bodine-electric.com ; or from http://www.e-motorsonline.com/emotors/dcmproduct_list.php.  

Typical Domestic Shipping Cost: $12.00.
Typical International Shipping Cost: $24.00.

Availability: We usually ship in 2-3 business days.

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